Purchasing still holds significant untapped potential for cost reduction. This lively guide encourages companies to prioritize purchasing more and make it a driver of margins. Numerous case studies from purchasing projects across various industries highlight concrete savings opportunities. New perspectives in purchasing, prerequisites for the proper positioning of purchasing, the right levers for cost reduction, implementation of results from purchasing projects, and an innovative model to support purchasing are discussed. Christian Schuh, a top management consultant specializing in procurement strategies, is a member of the Operations Practice at A. T. Kearney in Vienna. Michael Bremicker, a renowned buyer, has been with Vaillant for 25 years and leads the Asia Pacific division.